Q: Is 138,278 a Prime Number?
A: No, 138,278 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 138278 can be evenly divided by 1 2 7 14 17 34 49 83 98 119 166 238 581 833 1,162 1,411 1,666 2,822 4,067 8,134 9,877 19,754 69,139 and 138,278, with no remainder.
Since 138,278 cannot be divided by just 1 and 138,278, it is not a prime number.